Quick answer: January and December are the hardest months to sell a house in St. Clair County, Illinois, at a median of 39 days each. July is the easiest at 29 days. Across six years and about 23,000 MLS sales, the entire seasonal difference is roughly ten days, so the month you list matters far less here than the price you list at.
If you are thinking about selling in the Metro East and wondering whether to list now or wait for spring, you are really asking one question: how much does the calendar actually cost me?
We pulled six years of closed sales out of the MLS for St. Clair County, grouped them by month, and looked at how long the typical home took to sell. Roughly 23,000 sales, January 2021 through August 2026. The answer surprised a few people who assumed the market goes to sleep in December.
The short answer: December and January, by about ten days
January and December are the two slowest months to sell a house in St. Clair County, with February just behind them. July is the fastest. But look at the size of the gap before you rearrange your life around it.
Thirty-nine days in January against twenty-nine in July. That is the whole seasonal effect: about ten days, or a week and a half.
That is worth knowing. It is not worth waiting five months for.
Why the Metro East holds up better than people expect
National articles about seasonality are usually written about markets where winter genuinely stalls things. Our numbers do not look like that. The line from March through November is remarkably flat, moving only between twenty-nine and thirty-four days, and even the two worst months only add a week and a half on top.
A few things are working in your favor in the colder months.
- Less competition. Fewer sellers list in December and January, so your house is one of a smaller group rather than one of many.
- More serious buyers. People touring houses in January are not browsing. They are relocating, their lease is ending, or something has changed. Fewer showings, but a higher share of them mean something.
- Scott Air Force Base. Military and civilian moves do not follow the school calendar, and that steadies demand here in a way it does not in a purely residential suburb.
The honest version is this. Winter takes a bit more effort. Showings need more flexibility, the photographs have to work harder when the trees are bare, and you need a price that reflects the season you are actually in. That is a challenge, not a wall, and challenges are most of the job anyway.
What this means if you are reading this in the fall
September, October and November run thirty-three to thirty-four days. Spring runs thirty. You are giving up three or four days against the best month of the year.
So if you are ready to sell this fall, sell this fall. The case for holding off until April is much weaker here than the national advice suggests, and five months of carrying a house you no longer want is a real cost that no amount of seasonal timing makes back.
When waiting for spring does make sense
Waiting is the right call when you are going to use the time, not just pass it.
- The house needs work, and you will genuinely get it done over the winter.
- You are mid-renovation and listing now would mean showing an unfinished house.
- Your own move depends on something that has not happened yet, like a job start or a build completion.
Waiting is the wrong call when it is really just hesitation. A house that goes on in October, sits because it is priced wrong, and drifts through the holidays ends up with a days-on-market number that buyers read as “something must be wrong with it”. That damage comes from the price, not the month.
What matters more than the month
Ten days is the entire seasonal spread. Now consider that an overpriced house in any month routinely sits for two or three times the median. The calendar is the smallest lever on this list, not the biggest.
- Asking price, measured against what comparable homes are actually closing at.
- Condition and presentation, especially the first five photographs.
- How easy you make it for buyers to get in and see the place.
- The month you listed.
A correctly priced house in January will beat an overpriced house in May, comfortably. That is not a slogan. It is what the spread inside every individual month shows.
The bottom line
December and January are the hardest months to sell a house in St. Clair County, and they cost you roughly ten days. Every other month of the year sits within a few days of the best one. If you are ready to sell, the month is rarely the thing standing in your way.
Frequently asked questions
What is the hardest month to sell a house in the Metro East?
January, narrowly. Across 2021 to 2026, homes sold in January in St. Clair County took a median of 39 days, and December was effectively tied at 39. The fastest month was July at 29 days, so the difference between the hardest and easiest month is about ten days.
Does the Metro East housing market slow down in winter?
Less than most people assume. Homes take about ten days longer to sell in December and January than at the July peak, and every month from March through November falls within a five-day band. Winter is more challenging to sell in, but the market does not stop.
Is it better to sell in spring or fall in St. Clair County?
Spring is slightly faster. Homes sold in a median of 30 days from April through June, against 33 to 34 days in September through November. That is a difference of three or four days, which is rarely enough on its own to justify delaying a sale.
Should I take my house off the market for the winter?
Usually only if something is going to change while it is off. If a home has sat for months without an offer, withdrawing it and relisting with a corrected price, fresh photographs and any deferred work completed can be worth doing. Pulling it off and putting it back at the same price in April just costs you the winter.
Thinking about your own timing?
The month is the easy part of this decision. The harder part is knowing what your house is worth right now, because that is what decides whether waiting helps you or costs you. Start there, then pick the month.
Craig Ziegel, Single Tree Team, eXp Realty. Serving Belleville, O’Fallon, Shiloh, Swansea, Mascoutah, Millstadt, Collinsville and the rest of the Metro East.
